diet when breastfeeding

[Erin Bette]

Hello, nutrition gurus! I have never been pregnant nor am I a
mother, and I've been a vegetarian since I was 11. So that
brings me to the confusion surrounding this question...

There are new parents in my office, and I signed on to bring
them dinner on Monday night (we are all taking a turn). The
new mother is breastfeeding and wants to have a diet healthy
for a woman recovering from pregnancy and birth, as well as
for her new infant.

But I'm unsure about what to take them. Here are the dietary
restrictions they provided:

OK proteins: organic chicken, wild salmon, beans, eggs,
goat cheeses

NO: cow milk or cheese, red meats

Light on: onions, garlic, tofu, brassicas (broccoli, cabbage,
califlower, etc), super spicy

Given that, does anyone have a menu suggestion for dinner?
Remember that I do not know how to cook chicken or fish, so if
the menu includes that, it had better be foolproof...because
I'll mess it up!

I'll crosspost this in a breastfeeding community, and thanks
eternally in advance. I'm really at a loss here!